题目内容
15.The environment is terrible,but our government something to protect (保护)it already.( )A. | did | B. | has done | C. | will do | D. | was doing |
分析 环境很糟糕,但是我们的政府已经采取了一些措施来保护它.
解答 答案:B 联系语境根据already(已经),可知already是现在完成时的标志词,其结构为:have/has+过去分词.又因为government(政府)是单数名词,所以动词应用单数,即has done.故选B.
点评 此题考查现在完成时的用法.做题时,要联系语境找到标志词,现在完成时的标志词有already,yet,before,so far等等,同时也要熟记其结构have/has+过去分词.
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